filebeat 7.11.0

* filebeat 7.11.0
* remove virtualenv and bump to use py3.9

Closes #70842.

Co-authored-by: rui <rui@meetup.com>
Signed-off-by: Sean Molenaar <1484494+SMillerDev@users.noreply.github.com>
Signed-off-by: BrewTestBot <1589480+BrewTestBot@users.noreply.github.com>

Formula/filebeat.rb

@@ -2,8 +2,8 @@ class Filebeat < Formula
   desc "File harvester to ship log files to Elasticsearch or Logstash"
   homepage "https://www.elastic.co/products/beats/filebeat"
   url "https://github.com/elastic/beats.git",
-      tag:      "v7.10.2",
-      revision: "aacf9ecd9c494aa0908f61fbca82c906b16562a8"
+      tag:      "v7.11.0",
+      revision: "84c4d4c4034fcb49c1a318ccdc7311d70adee15b"
   # Outside of the "x-pack" folder, source code in a given file is licensed
   # under the Apache License Version 2.0
   license "Apache-2.0"
@@ -16,30 +16,16 @@ class Filebeat < Formula
   end
 
   depends_on "go" => :build
-  depends_on "python@3.8" => :build
+  depends_on "python@3.9" => :build
 
   uses_from_macos "rsync" => :build
 
-  resource "virtualenv" do
-    url "https://files.pythonhosted.org/packages/b1/72/2d70c5a1de409ceb3a27ff2ec007ecdd5cc52239e7c74990e32af57affe9/virtualenv-15.2.0.tar.gz"
-    sha256 "1d7e241b431e7afce47e77f8843a276f652699d1fa4f93b9d8ce0076fd7b0b54"
-  end
-
   def install
     # remove non open source files
     rm_rf "x-pack"
 
     ENV["GOPATH"] = buildpath
     (buildpath/"src/github.com/elastic/beats").install Dir["{*,.git,.gitignore}"]
-
-    xy = Language::Python.major_minor_version "python3"
-    ENV.prepend_create_path "PYTHONPATH", buildpath/"vendor/lib/python#{xy}/site-packages"
-
-    resource("virtualenv").stage do
-      system Formula["python@3.8"].opt_bin/"python3", *Language::Python.setup_install_args(buildpath/"vendor")
-    end
-
-    ENV.prepend_path "PATH", buildpath/"vendor/bin" # for virtualenv
     ENV.prepend_path "PATH", buildpath/"bin" # for mage (build tool)
 
     cd "src/github.com/elastic/beats/filebeat" do